An experimental investigation of collisionless shock ion acceleration is presented using a multicomponent plasma and a high-intensity picosecond duration laser pulse. Protons are the only accelerated ions when a near-critical-density plasma is driven by a laser with a modest normalized vector potential. The results of particle-in-cell simulations imply that collisionless shock may accelerate protons alone selectively, which can be an important tool for understanding the physics of inaccessible collisionless shocks in space and astrophysical plasma.

中文翻译：

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多组分接近临界密度等离子体中的激光驱动纯质子加速度


提出了使用多分量等离子体和高强度皮秒持续时间激光脉冲的无碰撞冲击离子加速的实验研究。当接近临界密度的等离子体由具有适度归一化矢量电位的激光驱动时，质子是唯一的加速离子。粒子单元模拟的结果表明，无碰撞激波可以选择性地单独加速质子，这可能是理解太空中无法接近的无碰撞激波和天体物理等离子体的物理学的重要工具。